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render3d: heightgen's plain and SMOOTH variants compiled (61 programs) - a smoothed or noise-only terrain had no height field on Vulkan; run-time defines as pure functions (program_defs.ludic) and manifest_test holds every program the source can ask for, literal or computed, to the manifest

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-29 22:30:35 +03:00
parent a8ccd34559
commit 9f07fc8a62
12 changed files with 254 additions and 11 deletions
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12
packages/ludic.render3d/terrain.ludic
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@ -191,10 +191,7 @@ function terrain_generate(render3d_st: mut Render3dState) -> void {
render3d_st.gvk_tag = was
}
function terrain_generate__t(render3d_st: mut Render3dState) -> void {
var defs = ""
if render3d_st.ter_dem_tex != 0 { defs = "#define DEM\n" }
if render3d_st.ter_smooth { defs = "#define SMOOTH\n" }
let p = r3d_program(render3d_st, "fullscreen.vert", "heightgen.frag", defs)
let p = r3d_program(render3d_st, "fullscreen.vert", "heightgen.frag", ter_heightgen_defs(render3d_st.ter_dem_tex != 0, render3d_st.ter_smooth))
# a map generated over another: its 256 MB height texture goes first
if render3d_st.ter_height_tex != 0 { gpu_tex_free(render3d_st, render3d_st.ter_height_tex); render3d_st.ter_height_tex = 0 }
render3d_st.ter_height_tex = tex_target(render3d_st, TERRAIN_RES, TERRAIN_RES, GL_R32F, GL_RED, GL_FLOAT, GL_LINEAR)
@ -453,10 +450,9 @@ function terrain_init_finish__t(render3d_st: mut Render3dState) -> void {
# (terrain.frag, SUN_INLINE): one rasterisation of the patches instead of two, in the frame and in
# the reflection. R3D_SUN_PASS=1 keeps the pass there too, for comparing.
render3d_st.ter_sun_inline = render3d_st.gpu_kind == GPU_VK and not r3d_env_has(render3d_st, "R3D_SUN_PASS")
if render3d_st.ter_sun_inline { defs = defs + "#define SUN_INLINE\n" }
render3d_st.ter_prog = r3d_program(render3d_st, "terrain.vert", "terrain.frag", defs)
render3d_st.ter_prog_far = r3d_program(render3d_st, "terrain.vert", "terrain.frag", defs + "#define FAR_ONLY\n")
render3d_st.ter_prog_near = r3d_program(render3d_st, "terrain.vert", "terrain.frag", defs + "#define NEAR_ONLY\n")
render3d_st.ter_prog = r3d_program(render3d_st, "terrain.vert", "terrain.frag", ter_prog_defs(defs, render3d_st.ter_sun_inline, 0))
render3d_st.ter_prog_far = r3d_program(render3d_st, "terrain.vert", "terrain.frag", ter_prog_defs(defs, render3d_st.ter_sun_inline, 1))
render3d_st.ter_prog_near = r3d_program(render3d_st, "terrain.vert", "terrain.frag", ter_prog_defs(defs, render3d_st.ter_sun_inline, 2))
render3d_st.ter_sun_prog = r3d_program(render3d_st, "terrain.vert", "tersun.frag", "")
render3d_st.ter_far_split = 200.0
if r3d_env_has(render3d_st, "R3D_TFAR") { render3d_st.ter_far_split = float(Text.to_int(r3d_env(render3d_st, "R3D_TFAR"))) }